Messages in this thread Patch in this message | | | Date | Wed, 31 Jul 2013 19:31:35 +0200 | From | Oleg Nesterov <> | Subject | [PATCH 2/3] tracing: Don't pass file_operations array to event_create_dir() |
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Now that event_create_dir() and __trace_add_new_event() always use the same file_operations we can kill these arguments and simplify the code.
Signed-off-by: Oleg Nesterov <oleg@redhat.com> --- kernel/trace/trace_events.c | 46 +++++++++++------------------------------- 1 files changed, 12 insertions(+), 34 deletions(-)
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index 5fcd18b..77ef314 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -1485,12 +1485,7 @@ event_subsystem_dir(struct trace_array *tr, const char *name, } static int -event_create_dir(struct dentry *parent, - struct ftrace_event_file *file, - const struct file_operations *id, - const struct file_operations *enable, - const struct file_operations *filter, - const struct file_operations *format) +event_create_dir(struct dentry *parent, struct ftrace_event_file *file) { struct ftrace_event_call *call = file->event_call; struct trace_array *tr = file->tr; @@ -1518,12 +1513,13 @@ event_create_dir(struct dentry *parent, if (call->class->reg && !(call->flags & TRACE_EVENT_FL_IGNORE_ENABLE)) trace_create_file("enable", 0644, file->dir, file, - enable); + &ftrace_enable_fops); #ifdef CONFIG_PERF_EVENTS if (call->event.type && call->class->reg) trace_create_file("id", 0444, file->dir, - (void *)(long)call->event.type, id); + (void *)(long)call->event.type, + &ftrace_event_id_fops); #endif /* @@ -1540,10 +1536,10 @@ event_create_dir(struct dentry *parent, } } trace_create_file("filter", 0644, file->dir, call, - filter); + &ftrace_event_filter_fops); trace_create_file("format", 0444, file->dir, call, - format); + &ftrace_event_format_fops); return 0; } @@ -1644,12 +1640,7 @@ trace_create_new_event(struct ftrace_event_call *call, /* Add an event to a trace directory */ static int -__trace_add_new_event(struct ftrace_event_call *call, - struct trace_array *tr, - const struct file_operations *id, - const struct file_operations *enable, - const struct file_operations *filter, - const struct file_operations *format) +__trace_add_new_event(struct ftrace_event_call *call, struct trace_array *tr) { struct ftrace_event_file *file; @@ -1657,7 +1648,7 @@ __trace_add_new_event(struct ftrace_event_call *call, if (!file) return -ENOMEM; - return event_create_dir(tr->event_dir, file, id, enable, filter, format); + return event_create_dir(tr->event_dir, file); } /* @@ -1835,11 +1826,7 @@ __trace_add_event_dirs(struct trace_array *tr) int ret; list_for_each_entry(call, &ftrace_events, list) { - ret = __trace_add_new_event(call, tr, - &ftrace_event_id_fops, - &ftrace_enable_fops, - &ftrace_event_filter_fops, - &ftrace_event_format_fops); + ret = __trace_add_new_event(call, tr); if (ret < 0) pr_warning("Could not create directory for event %s\n", call->name); @@ -2147,11 +2134,7 @@ __trace_early_add_event_dirs(struct trace_array *tr) list_for_each_entry(file, &tr->events, list) { - ret = event_create_dir(tr->event_dir, file, - &ftrace_event_id_fops, - &ftrace_enable_fops, - &ftrace_event_filter_fops, - &ftrace_event_format_fops); + ret = event_create_dir(tr->event_dir, file); if (ret < 0) pr_warning("Could not create directory for event %s\n", file->event_call->name); @@ -2196,13 +2179,8 @@ static void __add_event_to_tracers(struct ftrace_event_call *call) { struct trace_array *tr; - list_for_each_entry(tr, &ftrace_trace_arrays, list) { - __trace_add_new_event(call, tr, - &ftrace_event_id_fops, - &ftrace_enable_fops, - &ftrace_event_filter_fops, - &ftrace_event_format_fops); - } + list_for_each_entry(tr, &ftrace_trace_arrays, list) + __trace_add_new_event(call, tr); } static struct notifier_block trace_module_nb = { -- 1.5.5.1
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